Preprints
https://doi.org/10.5194/tc-2022-59
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2022-59
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
25 May 2022
25 May 2022
Ice Sheet and Sea Ice Ultrawideband Microwave Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay
- 1"N.Carrara" Institute of Applied Physics - National Reasearch Council, IFAC-CNR, Sesto Fiorentino, 50019, Italy
- 2Electroscience Laboratory, The Ohio State University, Columbus, OH 43212, USA
- 3Istituto Nazionale di Geofisica e Vulcanologia - INGV, Rome, 00143, Italy
- 4Byrd Polar and Climate Research Center, The Ohio State University, Colombus, OH 43210, USA
- 5Department of Earth and Planetary Sciences, University of Texas at San Antonio, San Antonio, TX 78249, USA
- 6Center for Satellite Application and Research NOAA/NESDIS and the U.S. National Ice Center, College Park, MD 20740, USA
- 7Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
- 8Radiation Laboratory, University of Michigan, Ann Arbor, MI 48109-2122, USA
- 9"U. Schiff" Department of Chemistry, University of Florence, Sesto Fiorentino, 50019, Italy
- 10Department of Science, Università degli Studi Roma Tre, Rome, 00154, Italy
- 1"N.Carrara" Institute of Applied Physics - National Reasearch Council, IFAC-CNR, Sesto Fiorentino, 50019, Italy
- 2Electroscience Laboratory, The Ohio State University, Columbus, OH 43212, USA
- 3Istituto Nazionale di Geofisica e Vulcanologia - INGV, Rome, 00143, Italy
- 4Byrd Polar and Climate Research Center, The Ohio State University, Colombus, OH 43210, USA
- 5Department of Earth and Planetary Sciences, University of Texas at San Antonio, San Antonio, TX 78249, USA
- 6Center for Satellite Application and Research NOAA/NESDIS and the U.S. National Ice Center, College Park, MD 20740, USA
- 7Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
- 8Radiation Laboratory, University of Michigan, Ann Arbor, MI 48109-2122, USA
- 9"U. Schiff" Department of Chemistry, University of Florence, Sesto Fiorentino, 50019, Italy
- 10Department of Science, Università degli Studi Roma Tre, Rome, 00154, Italy
Abstract. An airborne microwave wide-band radiometer (500–2000 MHz) was operated for the first time in Antarctica to better understand the emission properties of sea ice, outlet glaciers and the interior ice sheet from Terra Nova Bay to Dome C. The different glaciological regimes were revealed to exhibit unique spectral signatures in this portion of the microwave spectrum. Generally, the brightness temperatures over the inland ice sheet were warmest at the lowest frequencies consistent with models that predict that those channels sensed the deeper, warmer parts of the ice sheet. Spectra along the lengths of outlet glaciers were modulated by the deposition and erosion of snow, driven by strong katabatic winds. Similar to previous experiments in Greenland, the brightness temperatures across the frequency band were low in crevasse areas. Variations in brightness temperature were consistent with spatial changes in sea ice type identified in satellite imagery and in situ ground penetrating radar data. The results contribute to a better understanding of the utility of microwave wide-band radiometry for cryospheric studies and also advance knowledge of the important physics underlying existing L-band radiometers operating in space.
How to cite. Brogioni, M., Andrews, M. J., Urbini, S., Jezek, K. C., Johnson, J. T., Leduc-Leballeur, M., Macelloni, G., Ackley, S. F., Bringer, A., Brucker, L., Demir, O., Fontanelli, G., Yardim, C., Kaleschke, L., Montomoli, F., Tsang, L., Becagli, S., and Frezzotti, M.: Ice Sheet and Sea Ice Ultrawideband Microwave Airborne eXperiment (ISSIUMAX) in Antarctica: first results from Terra Nova Bay, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2022-59, in review, 2022.
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Marco Brogioni et al.
Interactive discussion
Status: closed
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor
| : Report abuse
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RC1: 'Comment on tc-2022-59', Anonymous Referee #1, 14 Oct 2022
The paper is very well written. I only have few comments to be addressed before it can get published. Pleases see attached . Thanks.
- AC1: 'Reply on RC1', Marco Brogioni, 07 Nov 2022
-
RC2: 'Comment on tc-2022-59', Anonymous Referee #2, 18 Oct 2022
Review of tc-2022-59 (Brogioni et al., 2022):General Comments:This papers reviews results of Ultrawide band radiometry in Terra Nova Bay, Antarctica. This is a fascinating set of results, both on the ground truthing it allows for of orbiting L-band radiometers and as a tool for clarifying processes combining thermal and dielectric gradients (both of which are discussed in this paper), but also the planetary analogs these observations may enable (notably the Juno spacecraft is current engaged in a series of flybys of icy moons near Jupiter, and has a similar instrument, the Multi Wavelength Radiometer, covering a similar frequency band).I think my major critique would be on the data itself - I am very familiar with the approach of making the data publicly available on acceptance; however what this means is that usability of the data cannot be peer reviewed. I would suggest that the paper should include an explicit pointer to at least an example of these sort of data which is in a format that is identical to the data in this paper, if not the data itself, to allow reviewers to determine if it meets expectations for findability, accessibility, interoperability and reusability.Specific Comments:Section 5: some illustrative cartoons showing the expected relationship between frequency and temperature for different environments might be helpful.Appendix B: What is the significance of this? Is there a central repository where someone could download these curated datasets? I would suggest a detailed table in supplementary materials with the granule names themselves to make this more useful.Technical corrections:Title: Should be Title case.Line 30: “mew” should be “new”Line 139: Young et al., 2017 is probably a better reference than Lilien 2021 for the little Dome C bed rock topographyLines 250-270: should be broken up into several paragraphsFigures 5 and 9: the longitude and latitude text is too small to be resolved when printed.All figures showing brightness temperature as a function of distance: using a linear color map for the different frequencies would better show the gradients in the spectra.Figure 6 b: is it possible to show the measurement uncertainties in brightness temperature on this plot (as was done for Figure 15)?Young, D. A., Roberts, J. L., Ritz, C., Frezzotti, M., Quartini, E., Cavitte, M. G. P., Tozer, C. R., Steinhage, D., Urbini, S., Corr, H. F. J., Van Ommen, T., and Blankenship, D. D., 2017, High resolution boundary conditions of an old ice target near Dome C, Antarctica, The Cryosphere, 11, 1--15, https://doi.org/10.5194/tc-11-1897-2017
- AC2: 'Reply on RC2', Marco Brogioni, 07 Nov 2022
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (22 Nov 2022) by Ted Maksym
AR by Marco Brogioni on behalf of the Authors (29 Nov 2022)
Author's response
Author's tracked changes
Manuscript
ED: Publish subject to technical corrections (16 Dec 2022) by Ted Maksym
Interactive discussion
Status: closed
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor
| : Report abuse
-
RC1: 'Comment on tc-2022-59', Anonymous Referee #1, 14 Oct 2022
The paper is very well written. I only have few comments to be addressed before it can get published. Pleases see attached . Thanks.
- AC1: 'Reply on RC1', Marco Brogioni, 07 Nov 2022
-
RC2: 'Comment on tc-2022-59', Anonymous Referee #2, 18 Oct 2022
Review of tc-2022-59 (Brogioni et al., 2022):General Comments:This papers reviews results of Ultrawide band radiometry in Terra Nova Bay, Antarctica. This is a fascinating set of results, both on the ground truthing it allows for of orbiting L-band radiometers and as a tool for clarifying processes combining thermal and dielectric gradients (both of which are discussed in this paper), but also the planetary analogs these observations may enable (notably the Juno spacecraft is current engaged in a series of flybys of icy moons near Jupiter, and has a similar instrument, the Multi Wavelength Radiometer, covering a similar frequency band).I think my major critique would be on the data itself - I am very familiar with the approach of making the data publicly available on acceptance; however what this means is that usability of the data cannot be peer reviewed. I would suggest that the paper should include an explicit pointer to at least an example of these sort of data which is in a format that is identical to the data in this paper, if not the data itself, to allow reviewers to determine if it meets expectations for findability, accessibility, interoperability and reusability.Specific Comments:Section 5: some illustrative cartoons showing the expected relationship between frequency and temperature for different environments might be helpful.Appendix B: What is the significance of this? Is there a central repository where someone could download these curated datasets? I would suggest a detailed table in supplementary materials with the granule names themselves to make this more useful.Technical corrections:Title: Should be Title case.Line 30: “mew” should be “new”Line 139: Young et al., 2017 is probably a better reference than Lilien 2021 for the little Dome C bed rock topographyLines 250-270: should be broken up into several paragraphsFigures 5 and 9: the longitude and latitude text is too small to be resolved when printed.All figures showing brightness temperature as a function of distance: using a linear color map for the different frequencies would better show the gradients in the spectra.Figure 6 b: is it possible to show the measurement uncertainties in brightness temperature on this plot (as was done for Figure 15)?Young, D. A., Roberts, J. L., Ritz, C., Frezzotti, M., Quartini, E., Cavitte, M. G. P., Tozer, C. R., Steinhage, D., Urbini, S., Corr, H. F. J., Van Ommen, T., and Blankenship, D. D., 2017, High resolution boundary conditions of an old ice target near Dome C, Antarctica, The Cryosphere, 11, 1--15, https://doi.org/10.5194/tc-11-1897-2017
- AC2: 'Reply on RC2', Marco Brogioni, 07 Nov 2022
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (22 Nov 2022) by Ted Maksym
AR by Marco Brogioni on behalf of the Authors (29 Nov 2022)
Author's response
Author's tracked changes
Manuscript
ED: Publish subject to technical corrections (16 Dec 2022) by Ted Maksym
Journal article(s) based on this preprint
Marco Brogioni et al.
Marco Brogioni et al.
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Short summary
In 2018 the first Antarctic campaign of UWBRAD was carried out. UWBRAD is a new radiometer able to collect microwave spectral signatures over the 0.5-2 GHz thus outperforming existing similar sensors. It allows to probe thicker sea ice and the ice sheets down to the bedrock. In this work we tried to assess the UWBRAD potentials for sea ice, glaciers, ice shelve and buried lakes. Also we highlighted the wider range of information the spectral signature can provide to glaciological studies.
In 2018 the first Antarctic campaign of UWBRAD was carried out. UWBRAD is a new radiometer able...